13839389 has 4 divisors (see below), whose sum is σ = 13973856. Its totient is φ = 13704924.

The previous prime is 13839383. The next prime is 13839407. The reversal of 13839389 is 98393831.

13839389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98393831 = 227 ⋅433453.

It is a cyclic number.

It is not a de Polignac number, because 13839389 - 2⁴ = 13839373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13839383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67079 + ... + 67284.

It is an arithmetic number, because the mean of its divisors is an integer number (3493464).

Almost surely, 2^13839389 is an apocalyptic number.

It is an amenable number.

13839389 is a deficient number, since it is larger than the sum of its proper divisors (134467).

13839389 is a wasteful number, since it uses less digits than its factorization.

13839389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134466.

The product of its digits is 139968, while the sum is 44.

The square root of 13839389 is about 3720.1329277326. The cubic root of 13839389 is about 240.0890236871.

The spelling of 13839389 in words is "thirteen million, eight hundred thirty-nine thousand, three hundred eighty-nine".